Electricity-apportioning apparatus



Aug'. 4, 1925.

n 1,548,718 W. FALKENBERG ELECTRICITY APPORTI ONI NG APPARATUS Filed vJune e. y19:234

Patented Aug. 4, 1925.

Y v"UNrrED STATES WILHELM EALKENEEEG, 0E NEW YORK, N. Y., AssIGNoR To ALBERT.

. NEW YORK, N. Y.

PATENTv orties.- I

wrELIcH,` or

ELECTEICITY-AEPORTIONING APPARATUS.

, Appnbatiqn `mmi'nme 6,

I. Be it known that LVILHELM FAEKEN-y BERG,.-a citizen of Germanyresiding at New lYork, county of New York, and State oi' 5 New York, have invented certain new and Auseful Improvements in ElectricityAppor tioningApparatus, of whichthe following is a specification. c

The present inventionl ltricity apportioning apparatus ordosimeter, and it is the principal object of the invention to provide an instrument 03E- this character for use by physicians which allowsa precise apportioning of the electric impulses during the .treatment ofa patient as for instance with cathode rays.

The regulation of the rays in the known instruments of this kind is eifected by means of a set screw which acting upon the interruptor, allows a regulation of the treatment of rays. A regulation by a set screw naturally is uncertain and does not permit a physician 'to keep up a treatment by such rays in certain prescribed doses as he has no means at his disposal to co-ntrol the exact doses used.

It is the object of the present invention to overcome these disadvantages by providing means visibly indicating the exact number of impulses or doses of electricity supplied to a patient during his treatment with ultraviolet and other rays, as an overdose of such rays will eventually result in serious injuries.

Another object of the invention is the combination of a regulating set screw forv the interruptor with an indicating device allowing the setting of the apparatus for any desired apportionment of the electric impulses.

Other objects and advantages of my invention will become more fully known as the description thereof proceeds, and will then be more specically pointed out in the appended claims.

In the accompanying drawing forming a material part of this disclosure:

Figure y1 is a section through the bottom plate of a high frequency apparatus in which the apportion indicator apparatus is mounted.

Figure 2 is a top plan View of the indicator mechanism. In the drawing 10 designates the bottom relates to an elecy 1923. serial No. 643,746.

plate of a high frequencyfapparatus in which the indicator ,for the apportioning device is mounted. A setscrew 11 is en gaging the bottom plate 10, and its end is engaging the interrupter (wa'gnerian ham-v The set screwill carries a toothed wheel or gear 12, which is in mesh with a gear 13 loosely mounted to rotatev aroundla pin 14.

The gear 13 engages another gear 15 loosely rotating around a pin 16 secured to bottom plate 10 in approximately the cen-V tral axis thereof. A cover plate 18 covers the gear wheels and the bot-tom plate 10. The hub 19 of gear 15 extends through plate 18 and carries at its outer end a hand 20.

Between plate 18 and gear 15, a plate 21 is provided which has a bushing 22 made integrally therewith which is adapted to rotate around the hub 19 of gear 15.l This bushing extends through the plate 18, and carries alarge hand 23. The plate 21 is preferably made of elastic material so that it rictionally engages the gear 15 in a depression of the same and is taken along when the gear 15 is rotated by the rotation of set screw 11. The cover plate 18 carries two dials 24 and 25, and when in the position marked 26, both hands 2O and 23 are aligned and cover each other. In this position the gear 15 'and plate 21 are coupled, and if now the set screw 11 is rotated, both hands will be displaced and travel together from position 26 to a position marked 27. If the rotation of the hands is continued, the large hand 23 will engage a pin 28, while the small hand will continue its motion as now the rictional engagement between gear 15 and plate 21 is interrupted.

The small hand then indicates the large apportionment Jfrom 12 to 23 and in this manner it is possible to indicate the comparatively insignificant axial displacement of the set screw visibly by means of the clearly visible position of the hands, which allows the physician to clearly and minutely ascertain the exact doses of electricity which he intends to use lfor the specific treatment.

It will be clear that changes may be made in the general arrangement and in the convoperation with theAothe-r set of indications,

'Y cations, afpiurality of indica-torsof Adifferent .and meansfor operating the indicators, said means comprising mechanism 'to ,permit the indicators vto move asa unit to alpredetermined point and .thereafter permit one of the indicators to continue rthe movementl in the ,same direction independently of 'the other indicator.

2. In a dosimeter, a casing having aplurality of `concentrically arranged p fdiai indi- `lengths for-cooperation with the respective `Sets of indications, .means lfor "limiting the movement' .of oneoi :the indicators ein one,

direction,l V4and means .operating on fa. common airis *for movement of `bothindicators as "a -unit to the point 4of 'limit `of moivement ofoneindicator and thereafter move the 3. A dosimeter, comprisingfa casing, having a `-plura'lity ofzconcentric dial indicators,

other indicator in the .same direction independefnt of the limited indicator.

an axial pin for the casing,`a gear rotatable 'A on thepin and having a hub portion extending lengthwise the pin, a. pointer carried by said hub portion, laufri'ction memberuenf fcircling the hub portion, a Apointericmfried 'by the Tfriction lnenloer `and of greater length than the `first -mentionedfpointen means carried by the Acasing `beyond thef range of movementof the first ymentioned Jpointer 'to iimit the movement #of the second mentioned pointer, and means'tooperate said gear at will, the `respective "pointers covoperating with the respective dial indica-"l5 tions.

" In l,testimony whereof I have `aiiied Vmy signature. 

